Summary of Proton Data
Make a table summerizing the information you find. This table of information should include the chemical shift for each peak (or multiplet). Determine the splitting pattern (singlet, doublet, triplet, quartet etc). Calculate or measure the coupling constant (in Hz) for the splitting patterns. You will need an NMR processing program to do all of this. If you use Nuts switch the X axis to frequency ("View" "Type" "Hertz") and find the difference in frequency between two points. If you are using the jcamp viewer you can convert ppm to Hz by multiplying by 300.
At this point, we will not try to interpret the proton spectrum. Instead we will go to the carbon spectrum and relate this back to the proton spectrum.
| Shift (ppm) |
Integration |
Splitting |
J Hz) |
| 9.75 | 1 | triplet | 2.6 |
| 5.1 | 1 | triplet
multiplet | 7.06
1.7 |
| 2.4 | 2 | doublet
doublet
doublet | 12.9
6.1
1.0 |
| 2.22 | 1 | doublet
doublet
doublet | 15.9
8.16
2.97 |
| 2.0 | 2 | broad | |
| 1.7 | 3 | singlet | |
| 1.6 | 3 | singlet | |
| 1.3 | 2 | multiplet
doublet | 7.4
1.1 |
| 0.9 | 3 | doublet | 7.3 |